On Aug 12, 11:00 am, "Martin Rowley" wrote:
... Hurn almost certainly wrong. It is at last 2C above any its
SYNOP
hourly data (20.6degC at 18Z), and as we had a maximum of 22.2degC
in
a *highly* sheltered back garden (given yesterday's fitful sunshine
we
would be roughly 2C warmer than Hurn at this time of year), I
suggest
the *true* day (and 24hr) maximum for Hurn for the 11th was the 18Z
figure of 20.6degC.

Martin.
[and]

"Nick" wrote ...

That would fit my perceptions with the Brockenhurst area of the New
Forest, not a great distance away, yesterday, where I was outdoors
between approx 1700 and 2030 BST. It was cloudy to overcast and
almost
certainly below 20C up to around 1900 BST. Then the sun appeared
from
the clouds (clearing skies in the west) and shone until sunset, and
for about half an hour was high enough in the sky for it to feel
pleasantly warm, so I'd say in that area the temp briefly went above
20C from around 1900-1930BST , a similar time of day to the quoted
Hurn max. That said Hurn would have been in the sun longer (as the
clear sky moved from the west) so I guess a 22C max is not out of
the
question.


.... If it had occurred mid-afternoon I'd tend to agree with you, but
the sunshine from the 18Z SYNOP (i.e. in the hour 1650-1750Z) was
0.2hr, having been 0.0hr for several hours previously. This is too
brief a period for the temperature to have responded so out of kilter
with other stations in the area: also, as noted above, our site, which
is highly sheltered, is much warmer than Hurn and had the same
sunshine profile (we're only a few miles away).

Martin.


--
Martin Rowley
West Moors, East Dorset (UK): 17m (56ft) amsl
Lat: 50.82N Long: 01.88W
NGR: SU 082 023